51results about How to "Extended operating distance" patented technology

A channel sounding method in a wireless local area network (WLAN) system is provided. The method, performed by a transmitter, includes transmitting a null data packet announcement (NDPA) frame to a receiver to initiate a channel sounding procedure; transmitting a null data packet (NDP) to the receiver and receiving a feedback frame. The feedback frame includes a plurality of segment frames and a channel feedback report. The channel feedback report is split into a plurality of feedback segments. Each of the plurality of feedback segments is respectively included in each of the plurality of segment frames. The each of the plurality of segment frames includes a first-segment subfield indicating whether the each of the plurality of feedback segment included is a first segment and a remaining-segment subfield indicating the number of remaining feedback segments.

Disclosed is a sliding mechanism apparatus used for slidably opening and closing a slider-type cellular phone. A guide member and a slider member are engaged with each other so as to enable to slide relative to each other. The end of one arm of a first torsion spring is connected to the slider member near the left edge thereof. The end of the other arm thereof is coupled to the right half area of the guide member. The end of one arm of a second torsion spring is connected to the slider member near the right edge thereof. The end of the other arm thereof is coupled to the left half area of the guide member. From the expanded original state of the first and second torsion springs, if an external force is exerted on the slider member or the guide member, the torsion springs are compressed into an acute angle and then spread again by means of the elastic force thereof. In this way, the slider member can move to the lowermost position or the lowermost position. In the first and second torsion springs, the distance between the ends of two arms is larger than at least half of the width of the slider member. Therefore, the first and second torsion springs can maximally utilize the width of the guide member while turning, thereby extending the maximum travel distance of the slider member.

The invention discloses a non-contact human-computer interaction method and system. The method comprises the following steps of: emitting and receiving light, extracting and processing signals, and decoding and sending operating instructions. The system comprises an emitting device, a receiving device and a control device. An interaction function is realized by instructing parts to do some simple actions, and near-distance accurate operation is not required, so that far-distance human-computer interaction is realized to a certain extent. The method and system disclosed by the invention are particularly applicable to handheld electronic equipment.

Glasses with gesture recognition function include a glasses frame and a gesture recognition system. The gesture recognition system is disposed on the glasses frame and configured to detect hand gestures in front of the glasses thereby generating a control command. The gesture recognition system transmits the control command to an electronic device to correspondingly control the electronic device.

The present disclosure relates to extremely high frequency (“EHF”) systems and methods for the use thereof, and more particularly to board-to-board connections using contactless connectors.

The invention discloses an anti-falling followed-turning-prevention bolt fastening device and a method for fastening a bolt through the device. The device and the method mainly solve the problems that bolts are fixed difficultly and are turned or fall easily during fastening and the inconvenience is caused by two-man operation during dual-nut fastening. The anti-falling followed-turning-prevention bolt fastening device comprises a socket spanner, a fixed connecting rod which is connected with the socket spanner, a fixed plate which is installed at the bottom of the fixed connecting rod and a clamping slot spanner which is connected with the fixed plate. The socket spanner comprises a handle, a socket and a connecting rod which is connected with the handle and the socket, a round hole is arranged at the upper end of the fixed connecting rod, the fixed connecting rod is sleeved on the connecting rod through the round hole, a connecting supporting ring is sleeved on the connecting rod, arranged under the fixed connecting rod and connected with the connecting rod through a fastener, the fixed plate is connected with the clamping slot spanner in a sliding mode, and the head portion of the clamping slot spanner is connected with a rotatable turning piece.

The invention discloses a quick overlapping tool for a draining line applied to ground potential operation, which belongs to the technical field of power operation equipment, comprises a main clamping seat and a secondary clamping seat used for clamping an insulated wire and further comprises a sleeving rod. The main clamping seat is provided with a sliding groove, and the secondary clamping seat is arranged in the sliding groove movably. The front end of the sleeving rod is connected with the secondary clamping seat, and the sleeving rod drives the secondary clamping seat to moveably clamp the insulated wire with respect to the main clamping seat. The main clamping seat is provided with a clamping block used to have the drainage line clamped tightly. The main clamping seat and the second clamping seat have the insulated wire tightly clamped, and when the clamping block has the drainage line clamped tightly, the insulated wire and the drainage line are electrically communicated. The quick overlapping tool for draining line provided by the invention enables that the overlapping of a drainage line can be completed in the form of ground potential operation, which greatly reduces manpower and equipment needed for overlapping. The working time required for the overlapping is also shortened considerably. With the quick overlapping tool of the invention, the effective overlapping can be realized without stopping the power supply, so as to ensure the continuity and reliability of the power supply.

The invention discloses a batch machining device and technology for reinforcing-steel-bar straight threads. The machining device comprises a left reinforcing-steel-bar straight thread machining device body, a right reinforcing-steel-bar straight thread machining device body, a left protective shed, a right protective shed and an automatic conveying platform for conveying to-be-machined reinforcing steel bars. The left reinforcing-steel-bar straight thread machining device body and the right reinforcing-steel-bar straight thread machining device body are used for machining the two ends of the to-be-machined reinforcing steel bars respectively. The automatic conveying platform is located between the two reinforcing-steel-bar straight thread machining device bodies. Each reinforcing-steel-bar straight thread machining device body comprises a reinforcing-steel-bar cutting device for cutting the to-be-machined reinforcing steel bars and a straight-thread threading machine for carrying out threading on the to-be-machined reinforcing steel bars. The automatic conveying platform comprises a reinforcing-steel-bar containing frame, a first transverse conveying frame, a threading machining frame and a reinforcing-steel-bar longitudinal movement mechanism. The machining technology includes the steps of 1, reinforcing-steel-bar lifting; 2, reinforcing-steel-bar cutting; 3, reinforcing-steel-bar secondary forward moving; 4, reinforcing-steel-bar threading; 5, reinforcing-steel-bar third-time forward moving. The machining device and technology are reasonable in design, easy and convenient to machine, manufacture, use and operate and good in use effect; the reinforcing-steel-bar straight thread batch machining process can be easily, conveniently and rapidly completed.

The invention discloses a dedusting smoke-removing assistant ventilating device for tunnel construction. One side of the inlet of a dedusting box (7) is connected with a dust hood (1), and the other side of the dedusting box is connected with the inlet of a drawing-type ventilator (14). A smoke-removing box (16) is installed at the tail part of the device, and connected with the outlet of the drawing-type ventilator. The foul air generated in the tunneling process is pumped into the dedusting box through the dust hood so as to execute the dust filtration, and the air is pumped into the smoke-removing box so as to execute the fume treatment, finally the purified air is discharged from the outlet of the drawing-type ventilator. The smoke-removing box is capable of conveying sodium hydroxide solution in a liquid inlet box to a spray pipeline (9) through a water pump (20) and spraying by an atomizer (12), sprayed alkaline solution mist executes the neutral reaction with the acid gas in the fume, so that the purification treatment of the fume is realized. The dedusting smoke-removing assistant ventilating device for the tunnel construction is capable of integrating the dust filtration, the fume treatment and the assistant ventilation, realizing the efficient purification of the foul air, and improving the ventilation condition in the tunnel.

According to the tool spacecraft system oriented to on-orbit control, docking mechanisms are installed on the upper portion and the lower portion of a spacecraft base of the system, a plurality of rigid mechanical arms and a plurality of flexible mechanical arms are installed on the spacecraft base, and end effectors are installed at the tail ends of the flexible mechanical arms and the tail ends of the rigid mechanical arms. The technical problems that a space robot only has a rigid mechanical arm and does not have a flexible mechanical arm, the space robot cannot adapt to narrow space and complex structure operation, the number of the mechanical arms is small, only one or two mechanical arms are arranged, the executable task is single, the function is limited, and a tail end operation mechanism carried by a traditional space robot is single and cannot give consideration to multiple tasks are solved. The tool spacecraft system is provided with four rigid mechanical arms with 7 degrees of freedom and two flexible arms with 12 degrees of freedom, and the six mechanical arms are arranged, so that the diversity of operable tasks of the spacecraft system is greatly improved, the function of the spacecraft system is expanded, and the reliability of executing the tasks of the spacecraft system is improved.

A wireless audio communication system and monitor is disclosed, comprising a transmitter and a receiver. The transmitter comprises an input for receiving audio information, and a filter for modifying the audio information. The transmitter further comprises a converter for converting the audio information into a digital audio information, and an antenna for wirelessly transmitting the digital audio information at a selected radio frequency. The receiver comprises an antenna for receiving the transmitted digital audio information, and a filter for modifying the digital audio information. The receiver further comprises a converter for converting the digital audio information into the audio information, and an output for communicating the audio information.

The invention discloses an infusion rack convenient for height adjusting. The infusion rack comprises a base, wherein the base end of a vertical rod is fixedly connected to the upper surface of the base; the middle of the lower surface of a limiting tray is fixedly connected to the top end of the vertical rod; movable rings movably sleeve outside the vertical rod; the lower surfaces of mounting rings are also fixedly connected to the upper surfaces of the movable rings; and the mounting rings also movably sleeve outside the vertical rod. According to the infusion rack convenient for height adjusting, second clamping teeth and first clamping teeth get into clamping connection, the right side faces of movable blocks, which are inserted into spring grooves, are fixedly connected to the otherends of two springs, and the other end of a pull rope runs through a through hole and extends to the right side of the movable ring, so that the positions of the movable rings on the vertical rod canbe fixed through the clamping connection of the first clamping teeth and the second clamping teeth, and the movable rings can move on the vertical rod as the first clamping teeth and the second clamping teeth get separated when the pull rope is pulled; therefore, the infusion rack is simple to operate; the positions of the movable rings can be fixed conveniently; and problems in the background technology can be solved.

An apparatus for locking and/or unlocking, in particular for an access and/or drive authorization and/or for other services in a motor vehicle in the type of a keyless entry/go functionality, for a wireless remote control or the like comprising a first device in the motor vehicle and an associated second device designed in the type of an electronic key, an ID-transponder, a chip card or the like, wherein both devices for the intended operation have transmitters and/or receivers for electromagnetic signals which allows a large operation distance and a long battery lifetime of the second device. This is achieved in that the first device transmits a first cyclic repeated signal for the activation and/or authentication of the second device with a first data protocol within a first transmission time interval and with a first cycle time.

The invention relates to an operating rod, in particular to an insulation operating rod for a shell type circuit breaker. The operating rod comprises an operating rod body, the top end of the operating rod is provided with a concave operating joint, and when the operating rod is in use, the concave operating joint is clamped inside an operating handle of the shell type circuit breaker. The insulation operating rod can be applied to the operation of the shell type circuit breaker with voltage classes of common 380 volts and below in the market.

The invention relates to a special pipe holding apparatus for venous incubation of anterolateral small incision cardiac surgery, which comprises a left clamp, a right clamp and a combining pin; the left clamp is composed of a left side handle, a left front side conveying rod, a left side combining part, a left back side conveying rod and a left side clamp head; the right clamp is composed of a right side handle, a right front side conveying rod, a right side combining part, a right back side conveying rod and a right side clamp head; the combining pin is composed of a pin base and a pin head.The special pipe holding apparatus has the advantages that a flexible and stable operation tool is provided for venous incubation required by extracorporeal circulation of the anterolateral small incision cardiac surgery; the possibility of influence on cannula by pipe core returning and even cannula slippage caused by unstable apparatus clamping for untight bonding of the pipe core and the pipe wall can be reduced during the aorta cannula process of such minimally invasive surgery; the flexibility of cannula head steering is greatly improved, the difficult of delivering a venous cannula to vena cava is solved; besides, the safety of this operation is greatly improved.

The invention provides a hand-held high-temperature weeding machine convenient to operate. The weeding machine comprises a machine head, a weeding attachment and a handle; a high-temperature generating device is arranged in the machine head, and the weeding attachment communicates with the high-temperature generating device; and the weeding machine further comprises a battery pack, and the batterypack is electrically connected with the high-temperature generating device and supplies power to the high-temperature generating device to make the high-temperature generating device operate. According to the weeding machine provided by the invention, the power is supplied to the high-temperature generating device through the battery pack, so that the weeding machine works; and compared with a current power supply mode through a power line, the power supply mode disclosed by the invention makes the weeding machine more convenient to operate, the weeding machine is not pulled by the power linewhen working, the weeding machine can be operated in any directions, the weeding machine is not affected by a length of the power line to affect operation distance, and the weeding machine can be conveniently held to each working environment; and the problem that operation cannot be performed because a socket cannot be found when working is performed outdoors is well avoided, the weeding machinecan be very suitable for outdoor work, an application range of the weeding machine is improved, and operational convenience of the weeding machine is improved.